Chapter 31 - 32 - Cellular And Molecular Effects Of Radiation Exposure

Question 1

What are the 3 main radiation effects on macromolecules?

Answer 1

Main chain scissor

Cross linking

Point lesions

Question 2

A separation involving the main linkage or chain of atoms in a large molecule

Answer 2

Main chain scission

Question 3

Formation of new chemical bonds that link side-chains with one another

Answer 3

Cross-linking

Question 4

What results and may be used as a measure of the degree of main chain scission?

Answer 4

Reduced viscosity

Question 5

What is the result of cross-linking?

Answer 5

Increased viscosity of a macro molecular solution

Question 6

Disruption or alteration of single chemical bonds. Changes in the cell may be undetectable to the repair mechanisms of intracellular environment. The cell will be damaged but may survive and reproduce the error. Though to be the mechanism of injury for late effects of radiation

Answer 6

Point lesions

Question 7

What is the most important macromolecule of the cell?

Answer 7

DNA

Question 8

_____ ____ from radiation may be detected and repaired

Answer 8

Chromosomal aberrations